rust/tests/ui/abi/union/union-c-interop.rs
Alex Crichton cf6d6050f7 Update test directives for wasm32-wasip1
* The WASI targets deal with the `main` symbol a bit differently than
  native so some `codegen` and `assembly` tests have been ignored.
* All `ignore-emscripten` directives have been updated to
  `ignore-wasm32` to be more clear that all wasm targets are ignored and
  it's not just Emscripten.
* Most `ignore-wasm32-bare` directives are now gone.
* Some ignore directives for wasm were switched to `needs-unwind`
  instead.
* Many `ignore-wasm32*` directives are removed as the tests work with
  WASI as opposed to `wasm32-unknown-unknown`.
2024-03-11 09:36:35 -07:00

36 lines
734 B
Rust

//@ run-pass
#![allow(non_snake_case)]
#[derive(Clone, Copy)]
#[repr(C)]
struct LARGE_INTEGER_U {
LowPart: u32,
HighPart: u32,
}
#[derive(Clone, Copy)]
#[repr(C)]
union LARGE_INTEGER {
__unnamed__: LARGE_INTEGER_U,
u: LARGE_INTEGER_U,
QuadPart: u64,
}
#[link(name = "rust_test_helpers", kind = "static")]
extern "C" {
fn increment_all_parts(_: LARGE_INTEGER) -> LARGE_INTEGER;
}
fn main() {
unsafe {
let mut li = LARGE_INTEGER { QuadPart: 0 };
let li_c = increment_all_parts(li);
li.__unnamed__.LowPart += 1;
li.__unnamed__.HighPart += 1;
li.u.LowPart += 1;
li.u.HighPart += 1;
li.QuadPart += 1;
assert_eq!(li.QuadPart, li_c.QuadPart);
}
}